Number 10

NBA - 1994

Guard Jeff Hornacek was one of the purest shooters around and was exactly what the Jazz were missing. The year before he arrived, they were 45-37. In the next seven seasons, the Jazz lost no more than 29 games in a season, appeared in the Western Conference Finals four times and represented the West in the NBA Finals twice.

Who came out on top: Utah Jazz. Hornacek was the missing ingredient that teamed with Karl Malone and John Stockton to turn the Jazz into a powerhouse, while the 76ers didn't surpass 25 wins during Jeff Malone's time with the team.

Number 9

NBA - 2001

Struggling to obtain consistent production out of its frontcourt players, the Sixers made a move to acquire the Hawks' stalwart center Dikembe Mutombo before the deadline. He quickly stabilized a team weakness, leading the league in rebounding (13.5 RPG) and helping the team turn a good year into a banner year. The Sixers would go on to achieve their first Eastern Conference Championship since 1983 and would become the only team in NBA history to win four major awards in one season: Most Valuable Player (Allen Iverson), Coach of the Year (Larry Brown), Sixth Man of the Year (Aaron McKie), and Defensive Player of the Year (Dikembe Mutombo).

Who came out on top: Philadelphia 76ers. The Hawks got a few mediocre players that would go on to have short tenures with the team, while the Sixers ended up with the only player ever to be named Defensive Player of the Year four times (Mutombo).

Number 8

MLB - 1990

Boston's Fenway Park was specifically built to cater to right-handed power hitters, but as the Red Sox were making a run for a World Series in 1990, they shipped off a Double-A prospect named Jeff Bagwell to Houston for a relief pitcher named Larry Andersen, who was supposed to bolster their bullpen. In 15 mediocre appearances, Andersen only converted one out of four save opportunities and the Red Sox ended up losing in the American League Championship Series to the Oakland Athletics.

Who came out on top: Houston Astros. Jeff Bagwell would go on to become the face of the franchise while piecing together a Hall-of-Fame career. Andersen departed to the San Diego Padres as a free agent immediately after the 2001 season.

A bad call by the Oakland A's, a trade that brought the Oilers the Cup and more...